Research Article

Arsenic, Chromium, and Other Potentially Toxic Elements in the Rocks and Sediments of Oropos-Kalamos Basin, Attica, Greece

Table 1

Mean values of the chemical composition of the examined samples in comparison with element contents obtained by other studies [3436] and enrichment factors (EF).

UnitsDLBulk lignite Chromiferous iron ore occurrences Marly formation ConglomeratesAlluvialElassona lignite mean [34]World Coal [35]Crustal average [36]EF 1 EF 2 EF 3 EF 4 EF 5

Ag μg kg−1244871014
Al %0.010.742.210.070.73
As mg kg−10.1226.239.812.134.832101.8125.722.16.719.3
Au μg kg−10.22.92.10.91.9
B mg kg−12056202420
Ba mg kg−10.530.7135.858.260.5200
Bi mg kg−10.020.20.330.020.09
Ca%0.012.012.3520.6913.86
Cd mg kg−10.010.690.550.020.10.01
Co mg kg−10.123.738.31.59.838.25265251.01.50.10.41.5
Cr mg kg−10.5212.3256.64.669.7212.5119201002.12.60.10.72.1
Cu mg kg−10.0132.4427.91.8521.1127.311915550.60.50.00.40.5
Fe %0.012.924.360.12.043.81
Ga mg kg−10.13.37.20.2225150.50.00.1
Hg μg kg−1526729.55200.30.083337.5368.862.5250.0
K%0.010.060.30.020.07
La mg kg−10.59.922.30.55.877300.30.70.00.2
Mg%0.010.330.519.990.71
Mn mg kg−11941252134380707.79207010000.11.30.10.40.7
Mo mg kg−10.017.630.510.120.241531.55.10.30.10.2
Na%0.0010.0390.0090.1090.011
Ni mg kg−10.1415.9293.94.869.188755.63.90.10.9
P %0.0010.0410.0450.0050.046
Pb mg kg−10.0120.2431.293.0130.8524.5457131.62.40.22.41.9
S %0.022.750.030.020.04
Sb mg kg−10.024.970.290.20.32310.224.91.51.01.6
Sc mg kg−10.15.36.80.31.7234220.20.30.00.1
Semg kg−10.14.30.80.30.61
Sr mg kg−10.5365.413.4910123.66083751.00.02.40.3
Temg kg−10.020.120.030.060.02
Th mg kg−10.11.85.60.21.42547.20.30.80.00.2
Ti %0.0010.0110.0140.0010.008
Tl mg kg−10.021.610.30.030.05
U mg kg−10.18.80.51.40.3721.84.90.30.80.2
V mg kg−1222565314187401351.70.50.00.1
Wmg kg−10.14.20.10.10.1
Zn mg kg−10.138.972.4463.5292.817650700.61.00.10.91.3

DL: detection limit, EF 1: lignite compared to crustal average, EF 2: chromiferous iron ore compared to crustal average, EF 3: marly formation compared to crustal average, EF 4: conglomerates compared to crustal average, and EF 5: alluvial compared to crustal average.